Overview of MEF 3 and 8

7/26/2019 Overview of MEF 3 and 8

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Introducing the Specifications of the Metro

Ethernet Forum


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* MEF 10 * replaced MEF 1 and MEF 5

MEF 2 Requirements and Framewor for Ethernet Ser!ice "rotection

MEF # $ircuit Emulation Ser!ice %efinitions& Frameworand Requirements in Metro Ethernet 'etwors

MEF ( Metro Ethernet 'etwor )rchitecture Framewor

"art 1 +eneric Framewor

MEF , Metro Ethernet Ser!ices %efinitions "hase I

MEF - EMS.'MS Information Model

MEF / Implementation )greement for the Emulation of "% $ircuitso!er Metro Ethernet 'etwors

MEF )stract 3est Suite for Ethernet Ser!ices at the 4'I

MEF 10 Ethernet Ser!ices )ttriutes "hase I

MEF 11 4ser 'etwor Interface 4'I6 Requirements and Framewor

MEF 12 Metro Ethernet 'etwor )rchitecture Framewor

"art 2 Ethernet Ser!ices 7a8er

MEF 1# 4ser 'etwor Interface 4'I6 38pe 1 Implementation )greement

MEF 1( )stract 3est Suite for Ethernet Ser!ices at the 4'I

MEF 15 Requirements for Management of Metro Ethernet

"hase 1 'etwor Elements

MEF 1, Ethernet 7ocal Management Interface

Introducing the Specifications of the Metro Ethernet Forum


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3his "resentation

"urpose

This presentation is intended as an introduction and companionto both the MEF 3 and MEF 8 Specifications

These are the two principal specifications relating to servicesthat carry ircuit Emulation!TM traffic across arrier Ethernet

)udience

"t is intended for #roduct Mar$eting% Engineering staff of membercompanies% for members of other standards bodies% Enterprisenetwor$ing staff% and service providers who

&ould li$e a 'uic$ overview of the specifications

#lan to read the specifications in detail

9ther %ocuments #resentations of the other specifications and an overview of all

specifications is available on the MEF web site

(ther materials such as white papers and case studies are alsoavailable


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MEF Specifications 9!er!iew

)udienceE'uipment Manufacturers supporting devices that provide ircuit Emulationover arrier Ethernet Services)*seful for Service #roviders architecting their systems)

"urposeircuit Emulation Service +tunnels, T-M traffic through a Metro Ethernet

networ$ allowing inclusion of legacy networ$s within a arrier Ethernet

environment

"urpose

.ives precise instructions for implementing interoperable ES e'uipment

that reliably transport T-M circuits across Metro Ethernet /etwor$s while

meeting the re'uired performance of circuit emulated T-M services as

defined in "T*0T and 1/S" T-M standards

$ircuit Emulation Ser!ice %efinitions& Framewor and Requirements in

Metro Ethernet 'etworsMEF #

Implementation )greement for the Emulation of "% $ircuits o!er

Metro Ethernet 'etworsMEF /

3echnical $ommittee Ser!ice )rea

)udienceE'uipment Manufacturers supporting devices that provide ircuit Emulationover arrier Ethernet Services)

*seful for Service #roviders architecting their systems)

3echnical $ommittee Ser!ice )rea


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MEF # $ES Framewor : Requirement

MEF / $ES Implementation )greement

Industr8;s first formal definition of $ES standards o!er Ethernet

) ser!ices description Types of T-M services offered over Metro Ethernet%

#-2 and S(/ET!S-2

-SE% -S3!E3% (03!STM0% (04!STM05

) requirement document

omprehensive ES re'uirements for providing T-M services overEthernet

S61 service 'uality parameters as specified by the "T* for T-Mservices

)n implementation agreement for Ethernet

#ractical agreement as to how to implement the ES over Ethernet


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3%M $ircuits

ehat is $ircuit Emulation Ser!iceo!er $arrier Ethernet?

$ircuit Emulation Ser!ice @tunnelsA 3%M traffic

through a Metro Ethernet networ

pac$et networ$ +emulates, a circuit0switched networ$% re0creating

the T-M circuit at the far end

invisible to T-M source and destination e'uipment

runs on a standard Ethernet 6ine Service 7E06ine

TDM Pipe

Metro Ethernet 'etwor

3%M $ircuits

e


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MEF # 3%M $ircuit Emulation

Support 3raditional "%=S9'E3=S% hand.offs to eBisting

customer !oice equipment

)llow Interworing onto Ethernet EC$S across the ME'F

$ES

I>F

TDM subscriber

demarcation

TDM subscriber

demarcation

Ser!ice "ro!ider 'etwor


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"S3'

$ustomer

"remises

Metro Ethernet

'etwor

MEF Ser!ice %efinitions

3%M )ccess 7ine Ser!ice 3)7S6

1pplication9 1ccess to a remote networ$ 7e)g) #ST/

$ESoE3

Ethernet

UNI

Ethernet

UNI

Ethernet

E-Line

Service

Ethernet TDM TDM$ES

I>F

$ES

I>F

TDM subscriber

demarcation

TDM Network

Interface



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$ustomer

"remises

$ustomer

"remises

Metro Ethernet

'etwor

MEF Ser!ice %efinitions

$ustomer.9perated $ES

1pplication9 Toll0bypass

$ESoE3

Ethernet UNI and

subscriber

demarcation

Ethernet UNI and

subscriber

demarcation

Ethernet

E-Line

Service

Ethernet TDM TDM$ES

I>F

$ES

I>F



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Structured Cs 4nstructured $ES


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3%M ser!ices supported MEF #6

TDM Serice %nter3aceUnstructured TDM

SericeStructured TDM Serice Structured TDM Serice 6ranularity

DS1 -e% -e% N.64 k/it%

DS3 -e% -e% DS1 N.64 k/it%

E1 -e% -e% N.64 k/it%

E3 -e% -e% E1& 'B,( it=s& %S0

C1 -e% -e% STS1 T15 T2

C3 -e% -e% STS1 T15 T2

C3c -e% -e% STS3c

STM1 -e% -e% C11 DS1 C12 E1 C3 DS3 E3 ot#er

STM1c -e% -e% C4 C3 C11 C12

C12 -e% -e%T15 DS1 T2 E1

STS1 DS3 E3 ot#er STS3c

C12c -e% -e% STS12c

STM4 -e% -e%C11 DS1 C12 E1

C3 DS3 E3 ot#er C4

STM4c -e% -e% C44c


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ME' $oS "erformance "arameters

3o ensure proper $ES I>F operation ser!ice qualit8

Ethernet Frame %ela8 should e minimied to meet MEF : defined parameters

Ethernet Frame %ela8 Cariation ME/ E;S

Ethernet Frame 7oss ES? and SES? should meet T-M re'uirements

'etwor a!ailailit8

should meet @@)@:A T-M re'uirement


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"% Interoperailit8 )greement DMEF /

Specifies Interoperailit8 requirements for

$onnecti!it8

3iming

Signaling

ME' performance criteria ME' ser!ices 9)M


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Emulated $ircuit Identifier

E$I%

D identifies the emulated circuit eing carried several emulated circuits

across a single E; where re'uired)

3his is added 8 the E$%FF

3S"$E1 $E2

Ser!ice 3iming

S%$E S%$E

S%I>FS%3%M

S%I>FS%3%M

S%E%

"S3'

S%3%M

"ro!ider . )

3ransport 3iming


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3iming options

3%M line timing use the cloc$ from the incoming T-M line

EBternal timing use an e>ternal reference cloc$ source

Free run timing use a free0running oscillator

Ethernet line timing recovering the cloc$ from the Ethernet interface

To M$/

-ata

To TDM

0or TS!)

loc$

-ata

loc$

M$/-bound

%&'

CESoETH I!

E>t)

Free?un

-ata

T-M6ine

EBternal 3imingReference

TDM-bound

%&'

Eth)6ine #loc,

Recoery

loc$


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Signaling

Structure )ware $ESoE3 must pro!ide signaling

E ommon hannel Signaling 7S

an be carried within the emulated service data

E ommon hannel Signaling 71S

Must be handled separately for />B5 service

0 Encoding Format for 1S

/ote must have a separate ontrol &ord from the -ata% but can sharesame E"-

*olume 09 bits) Duration 019 bits)

7 < = 8 17 1; 19 1

$$ent code 0= bits) R

not required ? set to >ero.@#D signaling alue

0codes 1::-1;8)


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"erformance Monitoring

Facilit8 %ata 7in

May monitor but not change -S E>tended Super

Frame message data

Errored %ata

ESoET2 should be capable of monitoring FrameError ratio


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ME' Ser!ice : S7) Requirements

ME' ser!ice qualit8 assurance is critical to maintain consistentqualit8 of the carried 3%M ser!ice

S7) ser!ice qualit8 parameters should support to thosespecified 8 the I34 for 3%M ser!ices0 />B5 Services re'uire 1S Signaling in ME/0 S-2!S(/ET re'uires pointer ad


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Frame %ela8 %efined

3he time required to transmit a ser!ice frame from source todestination across the ME'

Documents

Overview of MEF 3 and 8